Question

cielleil.
7. (a) Explain the terms 'valency' and 'variable valency'.
(b) How are the elements with variable valency named ?
Explain with an example,
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Answer 1

Answer:

Ans1.Valency-the combining capacity of an element is called valency.

Variable valency-Some element differ in their capacity to combine with other elements depending on the nature of the reaction.this property is called variable valency.

Ans2.For example iron can have a valency of both 4 and 3..

Explanation:

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